Abstract
The three dimensional structure of the N-terminal domain (residues 1–42) of the copper-responsive transcription factor Amt1 from Candida glabrata has been determined by two-dimensional 1 H-correlated nuclear magnetic resonance (NMR) methods. The domain contains an array of zinc-binding residues (Cys-X 2 -Cys-X 8 -Cys-X-His) that is conserved among a family of Cu-responsive transcription factors. The structure is unlike those of previously characterized zinc finger motifs, and consists of a three-stranded antiparallel ß-sheet with two short helical segments that project from one end of the ß-sheet. Conserved residues at positions 16, 18 and 19 form a basic patch that may be important for DNA binding.
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Acknowledgements
Support from the National Institutes of Health (to D.R.W, M.C.P. and the Biotechnology Core Facility at the University of Utah), and technical assistance from R. Edwards (HHMI-UMBC) is gratefully acknowledged. R.B.T. and D.L.S. are Meyerhoff Undergraduate Scholars at UMBC.
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Turner, R., Smith, D., Zawrotny, M. et al. Solution structure of a zinc domain conserved in yeast copper-regulated transcription factors. Nat Struct Mol Biol 5, 551–555 (1998). https://doi.org/10.1038/805
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DOI: https://doi.org/10.1038/805
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